Add a meaningful error message for unsupported MATLAB versions

[chadagreene]

Related to #11 and #118.

I just tried accessing some Zarr files for the first time using MATLAB 2024a, but it didn't work and the error messages I received were not very clear. Consider adding version checks to the top of each function along the lines of:

assert(~isMATLABReleaseOlderThan("R2024b"), 'Zarr support is for MATLAB version 2024b or newer.')

[krisfed]

Yes, that would be a good enhancement, thank you!